Hi there Luca, thanks for your kind words, I'm no expert in Sanskrit it's a vast subject, though the little bit I know I'm happy to share.
As for the sound of the words changing when you recite them repetitively - the mind will perhaps do that, and find similarities to other words or behave in a tricky way, but we need to bring our attention back to the original word continually.
The number 432 is of course the frequency of sound in hertz that we should be hearing, and not the 440 hertz that we have been fed by the unscrupulous leaders of our society today who wish to deliberately drag down our consciousness in order to keep us under control. The number 432 occurs in the Sanskrit texts in reference to the length of the current great age that we a reliving in called Kali Yuga. It is the last of the 4 great ages and is said to be the worst, as consciousness deteriorates with each successive great age in the cycle. The Kali Yuga is said to be 432 000 years long, the shortest of the four ages. The previous age was exactly double the length. We are about 5000 years into the Kali Yuga and have 427 000 years to go before the final annihilation of the cosmos, after which the cycle begins again at the top, with the golden age of perfected consciousness for the material realm. That's one reference that comes to mind though there may be others which I will look into and let you know.
Amazing correlations there. The universe does indeed seem to work in patterns indicating a conscious source of intelligence behind the entire creation.
The Astrological ages (12 of them) are interesting and different from the Vedic ages (4 in total), with differing lengths, though the patterns are very curious.